Does the timing belt need to be changed?

if they only sucked the fluid out and didnt change your filter that could be the problem it needs to be drained and refilled. hope this helps let me know and good luck

DUE TO THE AGE OF CAR, TIMING BELT WOULD BE A GOOD IDEA, YOU DO NOT HAVE TO REPLACE WATER PUMP, BUT IT WOULD BE A GOOD IDEA..GAS AND OIL HAVE NO EFFECT ON TIMING BELT OR WATER PUMP.....

TIMING BELT REPLACEMENT PAST DUE.YOU SHOULD HAVE REPLACED IT AT 60000 MILES.

Typically any timing belt replacement interval is 60k-75k miles. The book will however tell you 90k. Now it depends on what engine your Avalon came with. The 3.0 is a non interference engine meaning if it does snap, it will not cause any damage to your engine. The 3.5L engine however i dont know if its a interference engine or not but i dont see anywhere where it says it is. As always suggested, change your water pump as well, as it runs off the timing belt. Once i didnt change the water pump and a week later it locked up on me and ruined my perfect new timing belt. Truth be told :) lol

yes for the 3 litre motor toyota recomends every 90 000 miles

Most timing belts last from 70000 to 120000 miles, so I really don't think you need to worry about a timing belt. If the car starts right up and doesn't hesitate or bog down when running, then the fuel pump is good as well. The only things that would require replacement at this mileage are the air filter and the inline fuel filter. Sounds like someone is out to make a fast buck or two off you.

HI- Most manufacturers reccomend replacement at 90k, 180k, etc. Variables include other parts that may need replacing during these belt changes. Water pumps and timing belts should be purchased from the DEALERSHIP, regardless of who does work. This is proper, normal cost of maintaining your sequoia. Complete inspections and labor should be completed by mechanic familiar w/Toyota vehicles. Parts may run 150-250$. Labor depends on who ya know.- Hope this helps- Thanks- ED

here is a list of things that cause humming from the rear busted belt on the tire, bad bearing/s on the axle/s, planetary gears, dry rear end ring and pinion gear

Have a scan tool connected , so that you can retreive the diagnostic codes, this will help isolate the problem.
Good luck !

At you mileage, I say its due, not worth risking it breaking and bending the valves, also recomended changing are the water pump, timing belt tensioner, and idler for teh regular belts
Probably cost around $500 - $750